LookupIconIdFromDirectory16() is unused

[Francois Gouget]

dlls/user32/cursoricon.c defines a LookupIconIdFromDirectory16() 
function which is not used anywhere.

What is strange is thar user.exe.spec exports a 
LookupIconIdFromDirectoryEx() function. So shouldn't it export a 
LookupIconIdFromDirectory() function too? In which case I suspect that 
LookupIconIdFromDirectory16() would be its implementation...

Unfortunately I have no information about what 16bit dlls are supposed 
to export...